Banbra.CLL

It allows to get into the affected computer.
It captures certain information entered or saved by the user, with the corresponding threat to privacy.
It carries out actions that decrease the security level of the computer.
It uses stealth techniques to avoid being detected by the user.
It spreads
, across the Internet.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:

June 1, 2006

Detection updated on:

June 1, 2006

Statistics

No

Proactive protection:

Yes, using TruPrevent Technologies

Brief Description

Banbra.CLL is a Trojan, which although seemingly inoffensive, can actually carry out attacks and intrusions.

It captures certain information entered or saved by the user, with the corresponding threat to privacy:
keystrokes, in order to obtain information for accessing online banking services, passwords and other confidential information.

It sends the gathered information to a remote user by any available means: email, FTP, etc.

It reduces the security level of the computer:
it notifies the attacker that the computer has been compromised and is ready to be used maliciously; it opens one or more ports to allow remote access to the computer and takes action that compromises user confidentiality; it awaits remote-control orders received through
IRC.

It uses stealth techniques to avoid being detected by the user:

It deletes the original file from which it was run once it is installed on the computer.

It modifies system permissions in order to hide itself.

Banbra.CLL uses the following propagation or distribution methods:

Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.

Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.

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